How to fix “Error: unknown filesystem. grub rescue>“ The Next CEO of Stack OverflowGrub...

Do I need to write [sic] when a number is less than 10 but isn't written out?

Is it my responsibility to learn a new technology in my own time my employer wants to implement?

The past simple of "gaslight" – "gaslighted" or "gaslit"?

RigExpert AA-35 - Interpreting The Information

Is there a way to save my career from absolute disaster?

Why do airplanes bank sharply to the right after air-to-air refueling?

Why is the US ranked as #45 in Press Freedom ratings, despite its extremely permissive free speech laws?

A small doubt about the dominated convergence theorem

Won the lottery - how do I keep the money?

Newlines in BSD sed vs gsed

Why, when going from special to general relativity, do we just replace partial derivatives with covariant derivatives?

Why does standard notation not preserve intervals (visually)

Should I tutor a student who I know has cheated on their homework?

Can this equation be simplified further?

Help understanding this unsettling image of Titan, Epimetheus, and Saturn's rings?

Why did CATV standarize in 75 ohms and everyone else in 50?

What was the first Unix version to run on a microcomputer?

How is this set of matrices closed under multiplication?

Is French Guiana a (hard) EU border?

What happened in Rome, when the western empire "fell"?

Chain wire methods together in Lightning Web Components

Prepend last line of stdin to entire stdin

I believe this to be a fraud - hired, then asked to cash check and send cash as Bitcoin

Does Germany produce more waste than the US?



How to fix “Error: unknown filesystem. grub rescue>“



The Next CEO of Stack OverflowGrub rescue - error: unknown filesystemls on grub rescue - unknown filesystemGrub Rescue Error: Unknown FilesystemGrub rescue unknown file system errorunknown filesystem, grub rescueUnknown filesystem, grub rescueGrub rescue after udpating to Ubuntu 16.04None of the filesystem seems to work after grub rescue errorGrub rescue - error: unknown filesystem…tried everythingGRUB Loading error. I don't have partitionswrong start up disk












0















I have Windows 10 and Ubuntu on my PC. After I updated Windows I received this message:



Error: unknown filesystem
grub rescue>


I entered these commands:



set root=(hd0,6)
set prefix=(hd0,6)/boot/grub
insmod normal
normal


It worked fine but when I restarted the PC the same error message came up, so I deleted the partitions with Ubuntu. I restarted the PC and again the same error. Now when I try to put the commands from above I receive unknown filesystem.



What do I need to do to avoid this grub rescue?





I tried to run the commands given in the answer in a root shell but when I try to run the first command mount -t ext4 /dev/sda6 /mnt/ubuntu it returns



mount: /mnt/ubuntu: mount point does not exist


Maybe I haven't selected the correct partition so here I give you a link to check all my partitions and decide which one is the partition with Ubuntu:



fdisk output










share|improve this question
















bumped to the homepage by Community 13 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.











  • 3





    Possible duplicate of Grub rescue - error: unknown filesystem

    – karel
    Nov 6 '18 at 8:09






  • 1





    You deleted the Ubuntu partition, so maybe what you want is How to remove Ubuntu and put Windows back on?

    – Zanna
    Nov 16 '18 at 12:46
















0















I have Windows 10 and Ubuntu on my PC. After I updated Windows I received this message:



Error: unknown filesystem
grub rescue>


I entered these commands:



set root=(hd0,6)
set prefix=(hd0,6)/boot/grub
insmod normal
normal


It worked fine but when I restarted the PC the same error message came up, so I deleted the partitions with Ubuntu. I restarted the PC and again the same error. Now when I try to put the commands from above I receive unknown filesystem.



What do I need to do to avoid this grub rescue?





I tried to run the commands given in the answer in a root shell but when I try to run the first command mount -t ext4 /dev/sda6 /mnt/ubuntu it returns



mount: /mnt/ubuntu: mount point does not exist


Maybe I haven't selected the correct partition so here I give you a link to check all my partitions and decide which one is the partition with Ubuntu:



fdisk output










share|improve this question
















bumped to the homepage by Community 13 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.











  • 3





    Possible duplicate of Grub rescue - error: unknown filesystem

    – karel
    Nov 6 '18 at 8:09






  • 1





    You deleted the Ubuntu partition, so maybe what you want is How to remove Ubuntu and put Windows back on?

    – Zanna
    Nov 16 '18 at 12:46














0












0








0








I have Windows 10 and Ubuntu on my PC. After I updated Windows I received this message:



Error: unknown filesystem
grub rescue>


I entered these commands:



set root=(hd0,6)
set prefix=(hd0,6)/boot/grub
insmod normal
normal


It worked fine but when I restarted the PC the same error message came up, so I deleted the partitions with Ubuntu. I restarted the PC and again the same error. Now when I try to put the commands from above I receive unknown filesystem.



What do I need to do to avoid this grub rescue?





I tried to run the commands given in the answer in a root shell but when I try to run the first command mount -t ext4 /dev/sda6 /mnt/ubuntu it returns



mount: /mnt/ubuntu: mount point does not exist


Maybe I haven't selected the correct partition so here I give you a link to check all my partitions and decide which one is the partition with Ubuntu:



fdisk output










share|improve this question
















I have Windows 10 and Ubuntu on my PC. After I updated Windows I received this message:



Error: unknown filesystem
grub rescue>


I entered these commands:



set root=(hd0,6)
set prefix=(hd0,6)/boot/grub
insmod normal
normal


It worked fine but when I restarted the PC the same error message came up, so I deleted the partitions with Ubuntu. I restarted the PC and again the same error. Now when I try to put the commands from above I receive unknown filesystem.



What do I need to do to avoid this grub rescue?





I tried to run the commands given in the answer in a root shell but when I try to run the first command mount -t ext4 /dev/sda6 /mnt/ubuntu it returns



mount: /mnt/ubuntu: mount point does not exist


Maybe I haven't selected the correct partition so here I give you a link to check all my partitions and decide which one is the partition with Ubuntu:



fdisk output







grub2 grubrescue






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 16 '18 at 12:45









Zanna

51.2k13139242




51.2k13139242










asked Nov 6 '18 at 7:38









Capatina StefanCapatina Stefan

113




113





bumped to the homepage by Community 13 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.







bumped to the homepage by Community 13 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.










  • 3





    Possible duplicate of Grub rescue - error: unknown filesystem

    – karel
    Nov 6 '18 at 8:09






  • 1





    You deleted the Ubuntu partition, so maybe what you want is How to remove Ubuntu and put Windows back on?

    – Zanna
    Nov 16 '18 at 12:46














  • 3





    Possible duplicate of Grub rescue - error: unknown filesystem

    – karel
    Nov 6 '18 at 8:09






  • 1





    You deleted the Ubuntu partition, so maybe what you want is How to remove Ubuntu and put Windows back on?

    – Zanna
    Nov 16 '18 at 12:46








3




3





Possible duplicate of Grub rescue - error: unknown filesystem

– karel
Nov 6 '18 at 8:09





Possible duplicate of Grub rescue - error: unknown filesystem

– karel
Nov 6 '18 at 8:09




1




1





You deleted the Ubuntu partition, so maybe what you want is How to remove Ubuntu and put Windows back on?

– Zanna
Nov 16 '18 at 12:46





You deleted the Ubuntu partition, so maybe what you want is How to remove Ubuntu and put Windows back on?

– Zanna
Nov 16 '18 at 12:46










1 Answer
1






active

oldest

votes


















0














You'd need a live disk running Ubuntu or any Linux variant.



After such, follow the commands here to mount the necessary drives and chroot into the directory.



For the CHROOT PROCESS



See this article



I've highlighted the commands you can use in the window below:



sudo mount -t ext4 /dev/sda6 /mnt/ubuntu


Confirm that sda6 is your current root partition.



sudo mount /dev/sda1 /mnt/ubuntu/boot


Check if this drive is your windows boot partition



Then follow up and mount the other required filesystems



sudo mount -t proc none /mnt/ubuntu/proc
sudo mount -o bind /dev /mnt/ubuntu/dev
sudo mount -o bind /sys /mnt/ubuntu/sys


Follow up to chroot here using this:



chroot /mnt/ubuntu /bin/bash


You should get into another window screen with a terminal window



COMMANDS TO FIX FILESYSTEM MAPPINGS



Run the following to fix your issue



sudo grub-install /dev/sda
sudo update-grub


That should fix your GRUB issues for you automatically with the default filesystems containing your various operating systems.






share|improve this answer


























  • But if I want to get rid of Ubuntu and run windows only is there any easier method?

    – Capatina Stefan
    Nov 6 '18 at 10:34











  • You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508

    – Bakare Emmanuel
    Nov 6 '18 at 14:56













  • What is the command for writing on this site “program language”?

    – Capatina Stefan
    Nov 7 '18 at 10:17













  • Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please

    – Bakare Emmanuel
    Nov 7 '18 at 13:05











  • How can i write with that font with grey background

    – Capatina Stefan
    Nov 7 '18 at 14:19












Your Answer








StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "89"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});














draft saved

draft discarded


















StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1090423%2fhow-to-fix-error-unknown-filesystem-grub-rescue%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown

























1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









0














You'd need a live disk running Ubuntu or any Linux variant.



After such, follow the commands here to mount the necessary drives and chroot into the directory.



For the CHROOT PROCESS



See this article



I've highlighted the commands you can use in the window below:



sudo mount -t ext4 /dev/sda6 /mnt/ubuntu


Confirm that sda6 is your current root partition.



sudo mount /dev/sda1 /mnt/ubuntu/boot


Check if this drive is your windows boot partition



Then follow up and mount the other required filesystems



sudo mount -t proc none /mnt/ubuntu/proc
sudo mount -o bind /dev /mnt/ubuntu/dev
sudo mount -o bind /sys /mnt/ubuntu/sys


Follow up to chroot here using this:



chroot /mnt/ubuntu /bin/bash


You should get into another window screen with a terminal window



COMMANDS TO FIX FILESYSTEM MAPPINGS



Run the following to fix your issue



sudo grub-install /dev/sda
sudo update-grub


That should fix your GRUB issues for you automatically with the default filesystems containing your various operating systems.






share|improve this answer


























  • But if I want to get rid of Ubuntu and run windows only is there any easier method?

    – Capatina Stefan
    Nov 6 '18 at 10:34











  • You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508

    – Bakare Emmanuel
    Nov 6 '18 at 14:56













  • What is the command for writing on this site “program language”?

    – Capatina Stefan
    Nov 7 '18 at 10:17













  • Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please

    – Bakare Emmanuel
    Nov 7 '18 at 13:05











  • How can i write with that font with grey background

    – Capatina Stefan
    Nov 7 '18 at 14:19
















0














You'd need a live disk running Ubuntu or any Linux variant.



After such, follow the commands here to mount the necessary drives and chroot into the directory.



For the CHROOT PROCESS



See this article



I've highlighted the commands you can use in the window below:



sudo mount -t ext4 /dev/sda6 /mnt/ubuntu


Confirm that sda6 is your current root partition.



sudo mount /dev/sda1 /mnt/ubuntu/boot


Check if this drive is your windows boot partition



Then follow up and mount the other required filesystems



sudo mount -t proc none /mnt/ubuntu/proc
sudo mount -o bind /dev /mnt/ubuntu/dev
sudo mount -o bind /sys /mnt/ubuntu/sys


Follow up to chroot here using this:



chroot /mnt/ubuntu /bin/bash


You should get into another window screen with a terminal window



COMMANDS TO FIX FILESYSTEM MAPPINGS



Run the following to fix your issue



sudo grub-install /dev/sda
sudo update-grub


That should fix your GRUB issues for you automatically with the default filesystems containing your various operating systems.






share|improve this answer


























  • But if I want to get rid of Ubuntu and run windows only is there any easier method?

    – Capatina Stefan
    Nov 6 '18 at 10:34











  • You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508

    – Bakare Emmanuel
    Nov 6 '18 at 14:56













  • What is the command for writing on this site “program language”?

    – Capatina Stefan
    Nov 7 '18 at 10:17













  • Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please

    – Bakare Emmanuel
    Nov 7 '18 at 13:05











  • How can i write with that font with grey background

    – Capatina Stefan
    Nov 7 '18 at 14:19














0












0








0







You'd need a live disk running Ubuntu or any Linux variant.



After such, follow the commands here to mount the necessary drives and chroot into the directory.



For the CHROOT PROCESS



See this article



I've highlighted the commands you can use in the window below:



sudo mount -t ext4 /dev/sda6 /mnt/ubuntu


Confirm that sda6 is your current root partition.



sudo mount /dev/sda1 /mnt/ubuntu/boot


Check if this drive is your windows boot partition



Then follow up and mount the other required filesystems



sudo mount -t proc none /mnt/ubuntu/proc
sudo mount -o bind /dev /mnt/ubuntu/dev
sudo mount -o bind /sys /mnt/ubuntu/sys


Follow up to chroot here using this:



chroot /mnt/ubuntu /bin/bash


You should get into another window screen with a terminal window



COMMANDS TO FIX FILESYSTEM MAPPINGS



Run the following to fix your issue



sudo grub-install /dev/sda
sudo update-grub


That should fix your GRUB issues for you automatically with the default filesystems containing your various operating systems.






share|improve this answer















You'd need a live disk running Ubuntu or any Linux variant.



After such, follow the commands here to mount the necessary drives and chroot into the directory.



For the CHROOT PROCESS



See this article



I've highlighted the commands you can use in the window below:



sudo mount -t ext4 /dev/sda6 /mnt/ubuntu


Confirm that sda6 is your current root partition.



sudo mount /dev/sda1 /mnt/ubuntu/boot


Check if this drive is your windows boot partition



Then follow up and mount the other required filesystems



sudo mount -t proc none /mnt/ubuntu/proc
sudo mount -o bind /dev /mnt/ubuntu/dev
sudo mount -o bind /sys /mnt/ubuntu/sys


Follow up to chroot here using this:



chroot /mnt/ubuntu /bin/bash


You should get into another window screen with a terminal window



COMMANDS TO FIX FILESYSTEM MAPPINGS



Run the following to fix your issue



sudo grub-install /dev/sda
sudo update-grub


That should fix your GRUB issues for you automatically with the default filesystems containing your various operating systems.







share|improve this answer














share|improve this answer



share|improve this answer








edited Nov 16 '18 at 12:41









Zanna

51.2k13139242




51.2k13139242










answered Nov 6 '18 at 8:25









Bakare EmmanuelBakare Emmanuel

263




263













  • But if I want to get rid of Ubuntu and run windows only is there any easier method?

    – Capatina Stefan
    Nov 6 '18 at 10:34











  • You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508

    – Bakare Emmanuel
    Nov 6 '18 at 14:56













  • What is the command for writing on this site “program language”?

    – Capatina Stefan
    Nov 7 '18 at 10:17













  • Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please

    – Bakare Emmanuel
    Nov 7 '18 at 13:05











  • How can i write with that font with grey background

    – Capatina Stefan
    Nov 7 '18 at 14:19



















  • But if I want to get rid of Ubuntu and run windows only is there any easier method?

    – Capatina Stefan
    Nov 6 '18 at 10:34











  • You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508

    – Bakare Emmanuel
    Nov 6 '18 at 14:56













  • What is the command for writing on this site “program language”?

    – Capatina Stefan
    Nov 7 '18 at 10:17













  • Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please

    – Bakare Emmanuel
    Nov 7 '18 at 13:05











  • How can i write with that font with grey background

    – Capatina Stefan
    Nov 7 '18 at 14:19

















But if I want to get rid of Ubuntu and run windows only is there any easier method?

– Capatina Stefan
Nov 6 '18 at 10:34





But if I want to get rid of Ubuntu and run windows only is there any easier method?

– Capatina Stefan
Nov 6 '18 at 10:34













You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508

– Bakare Emmanuel
Nov 6 '18 at 14:56







You'd have to delete the Ubuntu partition and then restore the windows grub. Restoring it is optional as you could always continue with the linux one, if you're interested tho, it requires you have a windows bootable disk to get to the windows recovery option and reset your BCD configuration. More details here about how to do that after deleting the partition here: lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508

– Bakare Emmanuel
Nov 6 '18 at 14:56















What is the command for writing on this site “program language”?

– Capatina Stefan
Nov 7 '18 at 10:17







What is the command for writing on this site “program language”?

– Capatina Stefan
Nov 7 '18 at 10:17















Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please

– Bakare Emmanuel
Nov 7 '18 at 13:05





Sorry, could you expatiate on what you mean ---- "by writing on the site 'program language' " please

– Bakare Emmanuel
Nov 7 '18 at 13:05













How can i write with that font with grey background

– Capatina Stefan
Nov 7 '18 at 14:19





How can i write with that font with grey background

– Capatina Stefan
Nov 7 '18 at 14:19


















draft saved

draft discarded




















































Thanks for contributing an answer to Ask Ubuntu!


  • Please be sure to answer the question. Provide details and share your research!

But avoid



  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.


To learn more, see our tips on writing great answers.




draft saved


draft discarded














StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1090423%2fhow-to-fix-error-unknown-filesystem-grub-rescue%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown





















































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown

































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown







Popular posts from this blog

Why do type traits not work with types in namespace scope?What are POD types in C++?Why can templates only be...

Will tsunami waves travel forever if there was no land?Why do tsunami waves begin with the water flowing away...

Simple Scan not detecting my scanner (Brother DCP-7055W)Brother MFC-L2700DW printer can print, can't...